From a9d56950f763fa3e9d831541e62d223197d2ff60 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Mon, 2 Feb 2015 11:49:10 +1100
Subject: [PATCH] md/raid5: need_this_block: start simplifying the last two
 conditions.

Both the last two cases are only relevant if something has failed and
something needs to be written (but not over-written), and if it is OK
to pre-read blocks at this point.  So factor out those tests and
explain them.

Signed-off-by: NeilBrown <neilb@suse.de>
---
Reading git-format-patch failed